The Internet Corporation for Assigned Names and Numbers (ICANN) Board, the Security and Stability Advisory Committee (SSAC), and the Root Server System Advisory Committee (RSSAC) commissioned a study of the potential impact on the operation of the root server system of adding IPv6 address records, IDN top level names, other new TLDs, and new records to support DNS security to the root zone.
The DNS Root Scaling model developed by TNO shows how the different parts of the root server system are related and how changing something in one part affects each of the other parts. The model can be used to quantitatively assess – and therefore prioritize – risks involved when changing the value of one or more variables (e.g., the rate at which new TLDs are added to the root, or the expected frequency of emergency key rollover events in a signed root) on each of the component of the root server system. Partly on the basis of the initial results, ICANN has been advised to temporize and monitor the developments already initiated.
Root Zone Scalability Study
